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Repetition and associative context effects in speech production
1Washington University, St. Louis, MO 63130.
Language and Speech
|January 1, 1991
Summary
Lexical constraint affects speech production. Repeated words are spoken faster and quieter, while unrelated words are spoken slower and louder, impacting speech characteristics.
Area of Science:
- Psycholinguistics
- Speech Production
- Cognitive Science
Background:
- Lexical constraint influences how words are processed and produced.
- Understanding these effects is crucial for models of language production.
Purpose of the Study:
- To investigate how lexical constraint impacts the acoustic properties of spoken words.
- To examine the effects of repetition, associative relation, and unrelatedness on word duration and amplitude.
Main Methods:
- Participants produced sentences from memory.
- Target words were manipulated for lexical constraint: repetition, associative relation, or unrelatedness.
- Acoustic measures of mean duration and peak amplitude were recorded.
Main Results:
- Target words in the repetition condition had shorter mean durations than in the associatively related condition.
- The associatively related condition had shorter mean durations than the unrelated condition.
- Repeated target words exhibited lower peak amplitudes compared to unrelated or associatively related words.
Conclusions:
- Lexical constraint significantly modulates speech production characteristics.
- Increased lexical constraint leads to shorter word durations and reduced peak amplitudes.
- Findings support models where lexical predictability influences articulatory effort.